/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/NiagaraParameterPanelViewModel.h
Construct a SystemToolkit Parameter Panel View Model from a System View Model and an optional SystemGraphSelectionViewModel.
FNiagaraSystemToolkitParameterPanelViewModel ( const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FNiagaraSystemViewModel](API\Plugins\NiagaraEditor\ViewModels\FNiagaraSystemViewModel) > & InSystemViewModel )